/*
 * The contents of this web application are subject to the Mozilla Public License Version 
 * 1.1 (the "License"); you may not use this web application except in compliance with 
 * the License. You may obtain a copy of the License at http://www.mozilla.org/MPL/.
 * 
 * Software distributed under the License is distributed on an "AS IS" basis, 
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License 
 * for the specific language governing rights and limitations under the License.
 * 
 * The Original Code is owned by and the Initial Developer of the Original Code is 
 * Composite A/S (Danish business reg.no. 21744409). All Rights Reserved
 * 
 * Section 11 of the License is EXPRESSLY amended to include a provision stating 
 * that any dispute, including but not limited to disputes related to the enforcement 
 * of the License, to which Composite A/S as owner of the Original Code, as Initial 
 * Developer or in any other role, becomes a part to shall be governed by Danish law 
 * and be initiated before the Copenhagen City Court ("K�benhavns Byret")            
 */

using System;
using System.Linq;
using Composite.Core.Routing;
using Composite.Data;

namespace Composite.Community.Blog
{
    class BlogEntryDataUrlMapper: IDataUrlMapper
    {
        public IDataReference GetData(PageUrlData pageUrlData)
        {
            string pathInfo = pageUrlData.PathInfo;
            if(string.IsNullOrEmpty(pathInfo)) return null;

            string[] pathInfoParts = pathInfo.Split('/');
            if (pathInfoParts.Length != 5) return null;

            var filter = BlogFacade.GetBlogFilter(pageUrlData.PageId, pathInfoParts);
            if (filter == null) return null;

            var entry = DataFacade.GetData<Entries>().Where(filter).FirstOrDefault();

            return entry != null ? entry.ToDataReference() : null;
        }

        public PageUrlData GetPageUrlData(IDataReference instance)
        {
            if (!instance.IsSet || instance.ReferencedType != typeof (Entries))
            {
                return null;
            }

            var entry = instance.Data as Entries;
            if (entry == null || entry.PageId == Guid.Empty)
            {
                return null;
            }

            using (new DataScope(entry.DataSourceId.LocaleScope))
            {
                var page = PageManager.GetPageById(entry.PageId);
                if (page == null)
                {
                    return null;
                }

                return new PageUrlData(page)
                {
                    PathInfo = BlogFacade.GetBlogPath(entry)
                };
            }
        }
    }
}
